Jane in Upton

Wow, Brian, that's a lot of tanks! I feel much less self-indulgent now, LOL! Also, I can keep this in mind to justify getting another at some point!

I also have a bare bottom grow out tank w/ plants in pots.

Yes, the idea that in larger bodies of water the bare areas allocation of CO2 would be somewhat available to the more densly growing areas makes sense.

I agree, if the dosing of CO2 was low enough not to make routing fertilizing necessary, I also would still consider it "El Natural".

-Jane

DataGuru

My 125 isn't. It's sitting in front of two south windows and gets direct sunlight for multiple hours per day. It also has 180 watts over it for like 12 hours per day.